NGN Management Focus Group

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1 NGN Focus Group v Purpose and scope The goal of the work of the NGN Focus Group (NGNMFG) is to "organize and undertake a centralized approach regarding specification of NGN management related to FCAPS interfaces, in particular to support the NGN Release 1 1 ". FCAPS interfaces are generally understood to include NE-OS and OS-OS interfaces in support of element, network, service, and business management. Note that the term centralized in the goal statement does not imply that the NGNMFG will create all required specifications in a centralized way. The creation of specifications is distributed over many bodies and the responsibilities of these bodies are fully recognized. Centralized means here that the main role of the NGNMFG is acting as a coordinator and as an information broker on work directions, plans and progress in the various bodies. In this role, the NGNMFG has a good overview of the field and it can stimulate bodies in filling gaps and resolving harmonization issues. This roadmap document provides the result of this work. It lists the specifications which the NGNMFG agreed to offer to ITU-T SG4 as candidates for a suite of management specifications. It identifies also the gaps which have to be filled and candidate bodies to undertake this work. The current content is relevant for NGN Release 1; information regarding later Releases will be added when needed. 2. Specification architecture The NGNMFG ToR lists a number of objectives. This list provides a high level architecture for the set of specifications to be generated by the NGNMFG. The specification architecture comprises High Level Requirements (objective 1), Requirements (objective 2), Framework, Principle and Architecture (objective 3), Protocol-neutral and Protocol-specific NGN Interface Specifications (objective 4). Figure 1 visualizes the specification architecture. 1 NGNMFG Terms of Reference, section 1 [Annex 1] Contact: Leen Mak Lucent Technologies The Netherlands Tel:

2 - 2 - High Level Requirements Requirements Framework, Principles, Architecture Protocol- Neutral I/F Specs Protocol- Specific I/F Specs Figure 1: Specification Architecture Each of the five rectangles in Figure 1 represents a group of specifications, which are contained in one or more documents. The High Level Requirements are given from outside the NGNMFG, the most important source being the ITU-T NGN Focus Group (NGN FG). The documents containing the high level requirements are: - Y.2001, General overview of NGN; - Y.2011, General principles and general reference model for next generation networks; - Y.NGN-FRA, NGN Functional Requirements and Architecture [1]. The task of the NGNMFG is to identify candidate documents for the remaining four groups. Candidates will be selected from existing documents, from documents which are under construction, or from planned documents. When no suitable candidate can be identified, the NGNMFG will identify a suitable body and invite it to generate the required specification document(s). Only as a very last resort, the NGNMFG will generate a specification. The suite of candidate documents will be proposed to ITU-T SG4. 3. Specification categories The set of NGN specifications described in this roadmap is separated in four categories: 1) Specifications for NGN management (section 4.1): Specifications are listed under this category if they have been written specifically for NGN management and their scope is the NGN as a whole, i.e. they are not related to a specific functional entity in the NGN. Within this category, specifications are grouped according to their role in the specification architecture in Figure 1. 2) Generic telecommunications management specifications, reused for NGN (section 4.2): Specifications will be listed under this category, if they have not been written specifically for management of the NGN. The indication "NGN" does not appear anywhere in the titles of these documents, yet they are recognized as applicable for management of the NGN because of their generic applicability to telecommunications management.

3 - 3 - Dependent on their main subject areas, specifications within this category are identified as generic or according to their relation with the FCAPS and other functional areas. 3) Specifications for the management of NGN functions (section 4.3): Specifications will be listed under this category if their scope is the management of one or more specific functional entities in the NGN. This category includes specifications which have been written specifically for the management of NGN functions, and specifications which have been written for the management of non-ngn functional entities which are re-used in the NGN. Specifications in this category are identified according to their main application area in terms of the functional entities of the NGN as they are defined in Y.NGN-FRA [1], Figure 8. These entities are: - Service Stratum: o Application Functions Support Functions and Service Support Functions o Service User Profile Functions o Service Control Functions: Other Multimedia Components Streaming Service Component PSTN/ISDN Emulation Service Component IP Multimedia Service Component - Transport Stratum: o Transport User Profile Functions o Network Access Attachment Function o Resource and Admission Control Functions o Access Transport Functions o Edge Functions o Core Transport Functions - CPE: o Legacy Terminals o Gateways o NGN Terminals o Customer Networks 4) Other relevant specifications (section 4.4): Specifications, considered relevant for the management of the NGN, which do not belong to another category. 4. Agreed specifications The following tables list the specifications as agreed by the NGNMFG. 4.1 Specifications for NGN management

4 - 4 - Subcategory Document ID Title Notes/Issues Requirements ETSI TS OSS Requirements ETSI TS NGN ; OSS Vision Architecture IETF RFC 3535, section 3 ITU-T M.3060, clause 7 ITU-T M.3060 ETSI TS Overview of the 2002 IAB Network Workshop of Next Generation Networks of Next Generation Networks NGN ; OSS Architecture requirements specifications should be checked for possible harmonisation issues ETSI TS (see section 6.1) ITU-T M.3060 (see section 6.1) 4.2 Generic telecommunications management specifications reused for NGN Subcategory Document ID Title Notes/Issues Generic ITU-T M.3050 series Enhanced Telecom Operations Map (etom) 1) Equal to TMF etom v4 GB921 2) NGN relationship explained in M.3060 and in TS TMF 053B, C, D, and F TMF GB922 NGOSS Technology- Neutral Architecture v4.5 Shared Information/Data Model (SID) DMTF CIM Common Information Model Fault X.alarm Protocol-Neutral UML Description of the Alarm Reporting Function Configuration Accounting ATIS and ATIS Usage Data for Packet-Based Services - Service-Neutral Architecture and Protocol Requirements - Service-Neutral Protocol Specification for Billing Applications CIM, X.alarm-neutral, and MTNM SID harmonisation issue with SID, MTNM, and GPP IMS Charging specifications (see section 6.3)

5 - 5 - Subcategory Document ID Title Notes/Issues Performance Security M.3016 series Security of the management plane Service ITU-T M.3341 ITU-T M.3350 QoS/SLA management service requirements Emergency Telecommunication Service (ETS) management service requirements Protocol IETF Netconf NETCONF configuration protocol IETF STD 62 OASIS WSDM MUWS Simple Network Protocol version 3 WSDM Using Web Services (WSDM-MUWS) v1.1 NGN relationship explained in M.3060 for interfaces to the NE, for configuration for interfaces to the NE, primarily monitoring (including event reporting) for non-ne interfaces DMTF WBEM Web-Based Enterprise for CIM only Interface definition language IETF STD 58 Structure of Information version 2 to support SNMP; recommended MIBs are for further study Editor s note: consider adding SG4 M.ngn-ta for trouble ticketing 4.3 Specifications for the management of NGN functions Subcategory Document ID Title Notes/Issues Core Transport Functions ITU-T G.7718/Y.1709 ITU-T G /Y TMF 513 TMF 608 Framework for ASON Protocol-neutral management information model for the control plane view MTNM Business Agreement (part of TMF MTNM Solution Suite) MTNM Information Agreement (part of TMF MTNM Solution Suite) harmonisation issues with: SID, X.alarm-neutral, and (see section 6.2) SID and

6 - 6 - Subcategory Document ID Title Notes/Issues TMF 814 MTNM Solution Set in (see section 6.4) CORBA IDL with MEF 7 and Q Supporting Documentation (see section 6.7) (part of TMF MTNM Solution Suite) TMF 814A MTNM Implementation Statement Templates for CORBA (part of TMF MTNM Solution Suite) Access Transport Functions Service Stratum IMS Q MEF 7 Requirements and Analysis for NMS-EMS Interface of Ethernet over Transport and Metro Ethernet Network (EoT/MEN) EMS-NMS Information Model (for Metro Ethernet Network) TMF MTNM Solutions Suite (see Core Transport Functions) Q Requirements and analysis for the management interface of Ethernet passive optical networks (EPON) ATIS TMOC Usage Data specifications (see table 4.2) 3GPP TS to -4 3GPP TS GPP TS GPP TS GPP TS GPP TS Fault IRP Notification IRP Generic IRP Basic CM IRP Generic NRM IRP Core NRM IRP MEF 7 and MTNM Solution Suite (see section 6.7) Q and MTNM Solution Suite (see section 6.7) TMF MTNM Solution Suite, SID, and X.alarmneutral (see section 6.2)

7 - 7 - Subcategory Document ID Title Notes/Issues 3GPP TS Kernel CM IRP 664 3GPP TS State IRP possible harmonization issue with TMF MTNM Solution Suite and SID (see section 6.4) 3GPP TS , , , IMS Charging TMOC Usage Data specifications (see section 6.3) Editor s note: harmonization issues regarding the equipment model need to be investigated Editor s note: 3GPP 32 series specifications for the management of UMTS packet switching in Core Transport and UTRAN in Access Transport need to be investigated 4.4 Other relevant specifications Subcategory Document ID Title Notes/Issues IETF RFC 3444 On the Difference between Information Models and Data Models 5. Gaps The following table identifies areas for which suitable specifications candidate could not be identified. The NGNMFG has brought the gap areas to the attention of the organizations listed in the third column. Area Reference Organization Follow up Exchange of service orders, trouble tickets, etc NGN function oriented NE MIBs NGNMFG-ID-028 NGNMFG-OD-006 ITU-T Q.7/4 working on M.ngnta for trouble ticketing NGNMFG-ID-135 ETSI TISPAN WG8 working on the MIM 6. Harmonization Issues 6.1 Architecture ETSI TS describes the ETSI TISPAN NGN Architecture. This architecture is based on Service Oriented Architecture principles. The document specifies the architecture, defining and using architectural concepts like NGN OSS Service, NGN OSS Service Interface, NGN OSS Service Interface Consumer, NGN OSS Operation, and NGN OSS Service Interface. It

8 - 8 - provides a mapping of the NGN OSS Functional/Information View, which is based on TMForum s etom, to Service Interface Groups. ITU-T Recommendation M.3060 is titled Principles for the of Next Generation Networks. The architecture specified by this document is based on a number of concepts from the TMN Logical Layered Architecture. It refers also to Service Oriented Architecture principles. More investigation is needed to show whether and how the SOA and the LLA based approaches to NGN Architecture can be properly unified. 6.2 Alarm Alarm management is likely the most basic NGN management function and involves at a minimum alarm reporting with multiple severity levels; it may also include other functionality, such as alarm message routing and alarm message subscription. The following specifications include alarm management capabilities that have been identified for harmonization: TMF MTNM Solution Suite, TMF SID, 3GPP SA , and ITU-T SG 4 X.alarm-neutral. 6.3 Accounting, Charging, Billing 3GPP SA5 and ATIS TMOC have reached an initial agreement regarding the harmonization of their specifications for charging, billing, and accounting management and have indicated their willingness to work with the NGNMFG and SG4 to "move this work forward." This agreement provides guidelines on how to utilize the work of both organizations to support the architecture and functional requirements in Y.NGN-FRA. 6.4 State State management is another basic NGN management function. The following specifications include state management capabilities that have been identified for harmonization: TMF MTNM Solution Suite, TMF SID, and 3GPP SA Generic Information Models There are two Generic Information Models which were both inputs to the NGN Roadmap - TMF Shared Information and Data Model (SID) and DMTF Common Information Model (CIM). Traditionally the CIM and SID models were focusing on different operational domains. Currently, CIM s primary focus is on the IT resource management (Systems, Storage) and IP Networks, and SID provides a description of the telecom service provider's total technical and business systems. However, both models have a lot of similarities and overlap in the domain they cover and are currently used by the number of different management solutions. Harmonization between CIM and SID needs to occur within operational domains where these models need to coexist in order to provide interoperability between different management solutions used for NGN. The CIM-SID Harmonization activity is a joint effort between the Distributed Task Force (DMTF) and the Tele Forum (TMF). The project is divided into two phases. Phase 1 resulted in the publication of two companion documents: DMTF/TMF Model Alignment Physical sub-model Alignment, DMTF DSP2004/TMF GB932, and DMTF/TMF Model Alignment SID Logical Resources and CIM Networks Sub-Models, DMTF DSP2000/TMF GB933. The goal of Phase 2 is to identify processes and guidelines for the CIM-SID model mapping. This effort is scoped to the Physical and Logical Resources as identified in Phase 1. The final objective, however, is to develop an approach applicable to other domains as well. Further detail on this work is contained within Annex 4.

9 Model Harmonization An initial face-to-face meeting began with the presentation of the model status and planning in the following organizations: ETSI TISPAN WG8, Tele Forum, 3GPP SA5, Distributed Task Force, and ITU-T SG 4. With the above background information, the meeting focused on how to achieve a "shared/common model" and led to a set of goals, status, agreements, and issues and a plan for going forward. The centerpiece of the meeting's agreements was a proposal for a Shared Information Architecture (SIA) consisting of 3 model tiers: Tier 1 provides an overarching protocol-neutral model which "hosts" or maps onto a set of Tier 2 protocol-neutral models focused on specific problem domains which in turn map onto a set of Tier 3 implementable models based on specific paradigms. 6.7 Ethernet Harmonization based ethernet technology is a key component of the NGN transport stratum. The following specifications include ethernet management capabilities that have been identified for harmonization: ITU-T SG 4 Q.840.1, MEF 7, and TMF MTNM Solution Suite.

10 Annex 1: Terms of reference for the NGNMFG Available at the NGNMFG website: Annex 2: Organizations owning the listed specifications In this document, abbreviated names are used to identify the organizations which own the contributed specifications. This appendix lists the abbreviations, the full names, and the urls of the websites of the contributing organizations. Acronym Full name Website 3GPP 3rd Generation Partnership Project ATIS Alliance for Telecommunications Industry Solutions DMTF Distributed Task Force ETSI European Telecommunications Standards Institute IETF Internet Engineering Task Force ITU-T International Telecommunication Union MEF Metro Ethernet Forum OASIS Organization for the Advancement of Structured Information Standards TMF Tele Forum Annex 3: Description of Managed Entities The following documents contain specifications and descriptions of the NGN Managed Entities. Identification Title Notes 3GPP Network architecture 3GPP IP Multimedia Subsystem (IMS); Stage 2 ITU-T Y.NGN-FRA ITU-T Y.INF Functional Requirements and Architecture of the NGN IMS for Next Generation Networks ETSI ES NGN Functional Architecture Release 1 ETSI ES PSTN/ISDN Emulation Sub-system (PES); Functional architecture Editor s note: other specifications to be added

11 Annex 4: CIM-SID Harmonization activity Progress Report (May 2006) The CIM-SID Harmonization activity is a joint effort between the Distributed Task Force (DMTF) and the Tele Forum (TMF). The working group started more than a year and a half ago. This project is divided into two phases; an overview is provided below. CIM-SID Harmonization, Phase 1 Overview The project is divided into two phases. Phase 1 resulted in the publication of two companion documents: DMTF/TMF Model Alignment Physical sub-model Alignment, DMTF DSP2004/TMF GB932, and DMTF/TMF Model Alignment SID Logical Resources and CIM Networks Sub-Models, DMTF DSP2000/TMF GB933. This work identifies the scope of the models, similarities and differences with respect to the modeling approach, major concepts captured in the models, and related classes. GB932 (Physical Resources) provides an evaluation and high level comparison between GB922 Addendum 5PR and selected areas of the DMTF CIM 2.10 Physical Model. GB933 (Logical Resources) provides an evaluation and high level comparison, within the domain of Communication Networks, between selected areas of GB922 Addendum 5LR Logical Resource Business Entity Definitions (v1.1) defined as part of the Shared Information/Data (SID) Model and the Networks Model subset of CIM v2.10. As noted, GB932 and GB933 identify the key concepts appropriate to their respective domains and describe how they are represented in each of the models. The conclusion in GB932 indicates that there is a great deal of similarity between the CIM and the SID Physical Models and mapping is possible. Nevertheless, in order to enable the automation of this process some changes could be made. Details of the possible changes are left for Phase 2. GB933 concludes by stating that simple federation between the two models is not feasible due to major differences in design approach and scope. However, it may be possible to identify a correspondence between common concepts between the CIM and SID. In order to accomplish this, it is likely that modifications will be needed to one or both models to make subsequent mappings based on these correspondences more straightforward. CIM-SID Harmonization, Phase 2 Overview The goal of Phase 2 is to identify processes and guidelines for the CIM-SID model mapping. This effort is scoped to the Physical and Logical Resources as identified in Phase 1. The final objective, however, is to develop an approach applicable to other domains as well. The group is proceeding with an in-depth analysis based on: Defining scenarios/use cases relevant to CIM- and SID-centric operational domains. Deriving a set of semantic concepts from the use cases. Organizing the semantic concepts into a higher-level ontology that captures their interactions. Mapping CIM and SID elements onto the identified semantic concepts. Inferring CIM-SID element mappings. Example deployment scenario and business use case: The following deployment scenario and high-level business use case is proposed as an initial representative of an important domain where CIM and SID may need to co-exist.

12 Customer: A traditional telecommunications service provider (SP) is rolling out IP Multimedia Subsystem (IMS). Architecture: On one side the SP has the IP Multimedia Subsystem (IMS) core and radio access network and on the other side an IT infrastructure that supports the vast majority of the value added services being made available to subscribers/end-users. Assumptions: The IMS core and radio access network expose resource management interfaces through the Integration Reference Points (IRPs) defined by 3GPP. The corresponding Network Resource Models (NRMs) are realized on specified protocols such as Simple Network Protocol (SNMP), Web Based Enterprise (WBEM), or Common Object Resource Broker Architecture (CORBA). The IP networking environment underlying both the IMS core and the IT infrastructure exposes CIM-based resource management interfaces. The SP's Operations Support System (OSS) uses Operations Support Systems through Java (OSS/J) APIs for Order, Service Quality, Trouble Ticketing, Billing Mediation and Quality of Service (QoS). Requirement: The Order System must be used for order fulfillment in the IMS environment. Conclusion: In order to meet the requirement for reuse of the SP's existing OSS/J implementation, CIM-based representations of the IMS NRMs and IP infrastructure resources must be mapped to corresponding elements of the OSS/J Core Business Entities (CBE) (and therefore of the SID). Model Comparison and Mapping Methodology: In general it is possible to identify a set of semantic concepts shared between different models within the scope of particular business use cases and deployment scenarios; each model would represent these concepts differently. The set of concepts that collectively abstracts a domain can itself be described as a higher-level ontology. An example in the domain of Communication Networks is Topology, Network, SubNetwork, Network Elements, Connectivity, Protocols, etc. Element-level mappings can be made across the different models by mapping these concepts into the respective model elements. Semantic concepts may be mapped to the SID via the patterns defined by the Business View Entities (TMF GB922). The semantic concepts may be mapped to the CIM by leveraging CIM Profiles. Mapping of the semantic concepts to a particular model is done in the context of business processes expressed as high-level Use Cases. The set of Use Cases scoped to a particular domain (e.g. Communication Networks ) implies key concepts that must be represented. The initial goal of the mapping effort is to represent each of the semantic concepts for a given problem space using both CIM and SID. Initial efforts will concentrate on structural/relational mappings. Behavioral analysis will be undertaken as needed to support the semantic and structural mappings. Phase 2 Deliverables: The Deliverables for Phase 2 will include:

13 Definition of deployment scenarios within an operational domain where CIM and SID need to coexist. A set of semantic concepts derived from these use cases. A mapping methodology. A mapping between the relevant CIM and SID model elements by applying the proposed mapping methodology to the concrete examples of Equipment and Network modeling. Annex 5: Information about the listed specifications Annex 5 contains bibliographic information for each of the specifications listed in this document. This appendix is contained in a separate powerpoint file. References [1] Y.NGN-FRA, Functional Requirements and Architecture of the NGN Version 0.1 (ITU-T TD 133 (WP 2/13)) Document history Version Published in Comments 0.0 NGNMFG-ID-045 input to 31 March 2005 meeting 0.1 NGNMFG-ID-045-R1 output of 31 March 2005 meeting 0.2 NGNMFG-ID-045-R2 output of 26 May 2005 meeting 0.3 NGNMFG-ID-045-R3 output of 22 June 2005 meeting 0.4 NGNMFG-ID-045-R4 output of 27 July 2005 meeting 0.5 NGNMFG-OD-010-R2 output of 28 July 2005 meeting 1.0 NGNMFG-OD-013-R2 output of 7 September 2005 meeting (doc id: NGNMFG-OD-013-R2_Final_Roadmap.doc) 1.1 Permanent Document header format adapted input to 1 November 2005 meeting 1.2 Permanent Document agreed output of January, February, March, April 2006 meetings 2.0 Permanent Document changes made after April meeting, before SG4 meeting, reviewed per ; reported to SG4 in NGNMFG-OD Permanent Document changes made after SG4 meeting: replaced ToR text in Annex 1 by pointer to revised ToR v4.0

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